Fertigation on citrus seedlings using hoses and microtubes under turbulent flow regime

Revista Brasileira de Engenharia Agrícola e Ambiental

Souza, Wanderley J.¹  Silva, Leonardo D. B. da²  Botrel, Tarlei A.¹  Carvalho, Daniel F. de² 

[1] USP, Piracicaba;UFRRJ, Seropédica

关键词: emitter;    clogging;    localized irrigation;    precision irrigation    INTRODUÇÃO A fertigação é uma técnica bastante explorada na área agrícola e que tem;    como objetivo;    reduzir os custos com mão-de-obra resultantes da aplicação de fertilizante e suprir água e nutrientes à cultura;    podendo ser aplicado fertilizante líquido solúvel (Laurindo et;    al;   

DOI  :  10.1590/S1415-43662011000800008

学科分类：农业科学（综合）

来源: Universidade Federal de Campina Grande * Centro de Ciencias e Tecnologia

【 摘 要 】

The use of localized irrigation using microtube as emitter under turbulent flow regime can be a technically feasible alternative. The objective of this study was to evaluate the performance of a fertigation system in nursery of citrus plants (greenhouse) projected by universal mathematical model, using the microtubes as emitters, under turbulent flow rate and to compare the development of the fertigated plants by microtubes to the system that use the traditional method with hoses. In the size of the length of the emitters was considered the K coefficient of localized energy dissipation using a microtube with internal diameter of 0,761 mm. The fertigation system presented great performance with clogging degree, Christiansen uniformity and emission uniformity values equal to 0,50; 99,95 and 98,21%, respectively, after 160 days of study. Plants that were grown using fertigation with both microtubes and hoses showed no difference as regards to stem diameter and height. Thus, the use of the microtube under turbulent flow rate presented technical feasible for fertigation system.

【 授权许可】

CC BY-NC